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Page 5435, results 135851 - 135875

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Flood plains of the South Branch Shiawassee River, Livingston County, Michigan
L.E. Stoimenoff
1975, Open-File Report 75-78
This report presents the results of a flood-plain study of approximately 1.9 mi (3.1 km) of the South Branch Shiawassee River in Livingston County. This reach of stream s in a currently unincorporated area about 40 mi (64 km) northwest of Detroit. Although little development has taken place, the potential...
Chemical analyses (raw laboratory data) and locality index maps of the Confederate Gulch area, Broadwater and Meagher Counties, Montana
Water Resources Division, U.S. Geological Survey
1975, Open-File Report 75-212
Analysis of the side looking airborn radar imagery of Massachusetts, Connecticut and Rhode Island indicates that radar shows the topography in great detail. Since bedrock geologic features are frequently expressed in the topography the radar lends itself to geologic interpretation. The radar was studied by comparisons with field mapped geologic...
Preliminary report on the reconnaissance engineering geology of the Yakutat area, Alaska, with emphasis on evaluation of earthquake and other geologic hazards
Lynn A. Yehle
1975, Open-File Report 75-529
Yakutat, situated about 225 miles northwest of Juneau, Alaska, near the shores of the Gulf of Alaska, has a setting that calls for superlatives. Within the Yakutat region are some of the tallest mountains, some of the heaviest snowfalls, and the largest glacier in North America. Between the abrupt mountain...
A preliminary summary of petroleum potential, environmental geology, and the technology, time frame and infrastructure for exploration and development of the western Gulf of Alaska
Roland E. von Huene, Rodney Smith, Monty Hampton, George Moore, Gordon Dolton
1975, Open-File Report 75-536
This preliminary geology summary of the western Gulf of Alaska has been made to aid the Bureau of Land Management in defining an area for which nominations for oil and gas leasing will be solicited. The suggested area is centered about the Kodiak group of islands and is thought to...
Reconnaissance geology of the Central Mastuj Valley, Chitral State, Pakistan
Karl W. Stauffer
1975, Open-File Report 75-556
The Mastuj Valley in Chitral State is a part of the Hindu Kush Range, and is one of the structurally most complicated areas in northern Pakistan. Sedimentary rocks ranging from at least Middle Devonian to Cretaceous, and perhaps Early Tertiary age lie between ridge-forming granodiorite intrusions and are cut by...
Heavy mineral prospecting in Pakistan
Karl W. Stauffer, James Alfred Calkins
1975, Open-File Report 75-359
Heavy-mineral prospecting is a method of tracing potential ore minerals to their source by systematically examining the heavy minerals of stream sands. The heavy minerals are partially concentrated in the field by panning. In the laboratory the heavy minerals are further concentrated by floating off the quartz and feldspar in...
Geology of the Khyber Pass, Khyber Agency, Pakistan
Karl W. Stauffer
1975, Open-File Report 75-272
The defile of the Khyber Pass is cut in the massive gray recrystallized Khyber Limestone whose thickness exceeds 3,000 feet. Although no fossils have been found in the immediate vicinity of the pass, assemblages collected at the end of the last century from 5 miles south of the pass, and...
Geology of the Gilgit-Hispar area, Gilgit Agency, Pakistan
Karl W. Stauffer
1975, Open-File Report 75-273
The Gilgit-Hispar area contains a large variety of igneous and metamorphic rocks, which have been grouped into seven general lithologic units, five composed largely of metamorphic rocks and two of intrusive rocks. The metamorphic units consist of probable correlatives of the Precambrian(?) Salkhala Series; the upper Paleozoic, slightly metamorphosed schists,...
Geochemical prospecting for copper and nickel in the Wulgai and Tor Tangi areas southeast of Hindubagh, Quetta Division, Pakistan
S. Anthony Stanin, M.A. Wahid, Shamsher Khan
1975, Open-File Report 75-163
Showings of magnetite, copper, and possible nickel mineralization in the Hindubagh chromite mining district are near Wulgai and Tor Tangi. Several hundred samples of clastic material from dry streambeds in these areas were sieved for the minus-80-mesh fraction and analyzed for copper using 2, 2'-biquinoline and for nickel using alpha-furildioxime....
Lithology and chemical analyses of core and cuttings from USGS drill hole near Gold Acres, Lander County, Nevada
Chester T. Wrucke
1975, Open-File Report 75-363
Upper Paleozoic to Mesozoic eolian blanket sandstones of the Colorado Plateau and the Rocky Mountains of Colorado and southern Wyoming are texturally complex. As petroleum reservoirs they commonly have poor performance histories. They contain the sediments of a depositional system comprised of three closely associated depositional subenvironments: dune, interdune, and...
A program for mass spectrometer control and data processing analyses in isotope geology; written in BASIC for an 8K Nova 1120 computer
J. S. Stacey, J. Hope
1975, Open-File Report 75-127
A system is described which uses a minicomputer to control a surface ionization mass spectrometer in the peak switching mode, with the object of computing isotopic abundance ratios of elements of geologic interest. The program uses the BASIC language and is sufficiently flexible to be used for multiblock analyses of...
Mineral deposits in western Saudi Arabia; a preliminary report
Ralph Jackson Roberts, William R. Greenwood, Ronald G. Worl, F. C. W. Dodge, Thor H. Kiilsgaard
1975, Open-File Report 75-654
Mineral deposits in Saudi Arabia include a variety of deposits which were formed in many geologic environments. These include magmatic and late magmatic deposits in igneous masses, contact metamorphic deposits along the margins of igneous bodies, and stratiform sulfide deposits and veins. Notable deposits of sedimentary origin include deposits of...